Hello all. I picked up a 1941 Coleman Speedmaster today at a garage sale for 3 dollars Canadian (2.21us, £1.71). It was full of kerosene so I emptied it cleaned the generator and the burner plates and added Coleman fuel. When I fired it up I got a teal blue flame at the gurner and some orange at the flame tip. I am right in assuming this is due to the kerosene residue? Any suggestions on how to clear out the wrong fuel?
The remaining amount of kerosene will not affect the operation. After a few tankfulls very little kerosene will remain. Actually some lantern users actually use a mixture of Kero/Coleman fuel for better performance....not sure about in a stove.
Here are some photos. One think the pump will leak air out of the hole in the pump knob if not covered when pumping.
That's a bit much orange. I'd inspect the Bunsen for cobwebs or insect debris. Use a suitably sized bottle brush or fray out a bit of stranded wire and push through the manifold/Bunsen. Depending on how much was left in the tank vs how much CF you added it could be the kero. I'd still check for obstructions in the airway. Here's one I recently fettled running full tilt.
You turn the pump knob a few turns to open the way to the check valve, then pump with your thumb over the hole. After you have finished pumping, you release the thumb and turn the pmp knob clockwise to close the way to the check valve. If you mean that the tank is losing air when you take your thumb off, then the check valve is not working. Sometimes the ball in the check valve gets stuck. Lacquer thinner or such can clean it.
Hey snow camper the check valve was stuck. I poked a wire into it and it released and is working much better. It is burning much bluer now. Great suggestion cottage H.B. I Blasted the Bunsen with high pressure air but maybe it might need a scrub. I am going to try it out again tomorrow and do a boil test. Will post a revised flame shot then. Thanks for all the advice. Much appreciated.
I recently stripped down a Canadian 500 made in 1947 there is a leather disc on the pump shaft above the cup assembly it is free to move about - any idea what it is for?
Try holding one end of the Bunsen to a tap and letting water force any foreign bodies out. It worked for my Coleman 502. I used an outside tap as we don't have a bath. Just in case water squirts in directions you didn't intend. Hopefully that is all you need to do to restore normal operation. BTW: What diameter is the burner of this stove? I suspect that one of these would make a modern Coleman stove look inadequate, never mind that 502 of mine.
